I'm surprised that noone's mentioned a Pentax 6x7 or 67 with the prism removed.
I borrowed a Kiev 60 for a few months, and shot off a couple of rolls with the prism off and the viewfinder hood on. Was a lot like shooting with my Yashica Mat, except for the blanking out of the viewfinder after the shutter fired. And the loud *SPROING* noise. -Mat
